The artist is Tatsuki Fujimoto, the author of Chainsaw Man.
No upbear for Captain Imperialism, sorry comrade
Given the context of the author’s work, I doubt it’s pro-America.
(I may be only half-right btw) In Chainsaw Man, devils are monsters that are based on people’s collective fears, with the more feared a thing or idea is, the stronger the devil personification is.